<?php

/*
	[UCenter] (C)2001-2099 Comsenz Inc.
	This is NOT a freeware, use is subject to license terms

	$Id: pm.php 1059 2011-03-01 07:25:09Z monkey $
*/

! defined ( 'IN_UC' ) && exit ( 'Access Denied' );

define ( 'PMINBALCKLIST_ERROR', - 6 );
define ( 'PMSENDSELF_ERROR', - 8 );
define ( 'PMSENDNONE_ERROR', - 9 );
define ( 'PMSENDCHATNUM_ERROR', - 10 );
define ( 'PMTHREADNONE_ERROR', - 11 );
define ( 'PMPRIVILEGENONE_ERROR', - 12 );
define ( 'PMCHATTYPE_ERROR', - 13 );
define ( 'PMUIDTYPE_ERROR', - 14 );
define ( 'PMDATA_ERROR', - 15 );

class pmmodel {
	
	var $db;
	var $base;

	function __construct(&$base) {

		$this->pmmodel ( $base );
	}

	function pmmodel(&$base) {

		$this->base = $base;
		$this->db = $base->db;
	}

	function pmintval($pmid) {

		return @is_numeric ( $pmid ) ? $pmid : 0;
	}

	function getpmbypmid($uid , $pmid) {

		if (! $pmid) {
			return array ();
		}
		$arr = array ();
		$pm = $this->db->fetch_first ( "SELECT * FROM " . UC_DBTABLEPRE . "pm_indexes i LEFT JOIN " . UC_DBTABLEPRE . "pm_lists t ON t.plid=i.plid WHERE i.pmid='$pmid'" );
		if ($this->isprivilege ( $pm ['plid'], $uid )) {
			$pms = $this->db->fetch_all ( "SELECT t.*, p.*, t.authorid as founderuid, t.dateline as founddateline FROM " . UC_DBTABLEPRE . $this->getposttablename ( $pm ['plid'] ) . " p LEFT JOIN " . UC_DBTABLEPRE . "pm_lists t ON t.plid=p.plid WHERE p.pmid='$pm[pmid]'" );
			$arr = $this->getpostlist ( $pms );
		}
		return $arr;
	}

	function isprivilege($plid , $uid) {

		if (! $plid || ! $uid) {
			return true;
		}
		$query = $this->db->query ( "SELECT * FROM " . UC_DBTABLEPRE . "pm_members WHERE plid='$plid' AND uid='$uid'" );
		if ($this->db->fetch_array ( $query )) {
			return true;
		}
		else {
			return false;
		}
	}

	function getpmbyplid($uid , $plid , $starttime , $endtime , $start , $ppp , $type = 0) {

		if (! $type) {
			$pm = $this->getprivatepmbyplid ( $uid, $plid, $starttime, $endtime, $start, $ppp );
		}
		else {
			$pm = $this->getchatpmbyplid ( $uid, $plid, $starttime, $endtime, $start, $ppp );
		}
		return $this->getpostlist ( $pm );
	}

	function getpostlist($list) {

		if (empty ( $list )) {
			return array ();
		}
		$authoridarr = $authorarr = array ();
		foreach ( $list as $key => $value ) {
			$authoridarr [$value ['authorid']] = $value ['authorid'];
		}
		if ($authoridarr) {
			$this->base->load ( 'user' );
			$authorarr = $_ENV ['user']->id2name ( $authoridarr );
		}
		foreach ( $list as $key => $value ) {
			if ($value ['pmtype'] == 1) {
				$users = explode ( '_', $value ['min_max'] );
				if ($value ['authorid'] == $users [0]) {
					$value ['touid'] = $users [1];
				}
				else {
					$value ['touid'] = $users [0];
				}
			}
			else {
				$value ['touid'] = 0;
			}
			$value ['author'] = $authorarr [$value ['authorid']];
			
			$value ['msgfromid'] = $value ['authorid'];
			$value ['msgfrom'] = $value ['author'];
			$value ['msgtoid'] = $value ['touid'];
			
			unset ( $value ['min_max'] );
			unset ( $value ['delstatus'] );
			unset ( $value ['lastmessage'] );
			$list [$key] = $value;
		}
		return $list;
	}

	function setpmstatus($uid , $touids , $plids , $status = 0) {

		if (! $uid) {
			return false;
		}
		if (! $status) {
			$oldstatus = 1;
			$newstatus = 0;
		}
		else {
			$oldstatus = 0;
			$newstatus = 1;
		}
		if ($touids) {
			foreach ( $touids as $key => $value ) {
				if ($uid == $value || ! $value) {
					return false;
				}
				$relastionship [] = $this->relationship ( $uid, $value );
			}
			$plid = $plidpostarr = array ();
			$query = $this->db->query ( "SELECT plid FROM " . UC_DBTABLEPRE . "pm_lists WHERE min_max IN (" . $this->base->implode ( $relationship ) . ")" );
			while ( $thread = $this->db->fetch_array ( $query ) ) {
				$plidarr [] = $thread ['plid'];
			}
			if ($plidarr) {
				$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_members SET isnew='$newstatus' WHERE plid IN (" . $this->base->implode ( $plidarr ) . ") AND uid='$uid' AND isnew='$oldstatus'" );
			}
		}
		if ($plids) {
			$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_members SET isnew='$newstatus' WHERE plid IN (" . $this->base->implode ( $plids ) . ") AND uid='$uid' AND isnew='$oldstatus'" );
		}
		return true;
	}

	function set_ignore($uid) {

		return $this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . "newpm WHERE uid='$uid'" );
	}

	function isnewpm($uid) {

		return $this->db->result_first ( "SELECT COUNT(*) FROM " . UC_DBTABLEPRE . "newpm WHERE uid='$uid'" );
	}

	function lastpm($uid) {

		$lastpm = $this->db->fetch_first ( "SELECT * FROM " . UC_DBTABLEPRE . "pm_members m LEFT JOIN " . UC_DBTABLEPRE . "pm_lists t ON m.plid=t.plid WHERE m.uid='$uid' ORDER BY m.lastdateline DESC LIMIT 1" );
		$lastmessage = unserialize ( $lastpm ['lastmessage'] );
		if ($lastmessage ['lastauthorid']) {
			$lastpm ['lastauthorid'] = $lastmessage ['lastauthorid'];
			$lastpm ['lastauthor'] = $lastmessage ['lastauthor'];
			$lastpm ['lastsummary'] = $lastmessage ['lastsummary'];
		}
		else {
			$lastpm ['lastauthorid'] = $lastmessage ['firstauthorid'];
			$lastpm ['lastauthor'] = $lastmessage ['firstauthor'];
			$lastpm ['lastsummary'] = $lastmessage ['firstsummary'];
		}
		return $lastpm;
	}

	function getpmnum($uid , $type = 0 , $isnew = 0) {

		$newsql = '';
		$newnum = 0;
		
		if ($isnew) {
			$newsql = 'AND m.isnew=1';
		}
		if (! $type) {
			$newnum = $this->db->result_first ( "SELECT COUNT(*) FROM " . UC_DBTABLEPRE . "pm_members m WHERE m.uid='$uid' $newsql" );
		}
		else {
			$newnum = $this->db->result_first ( "SELECT COUNT(*) FROM " . UC_DBTABLEPRE . "pm_members m LEFT JOIN " . UC_DBTABLEPRE . "pm_lists t ON t.plid=m.plid WHERE m.uid='$uid' $newsql AND t.pmtype='$type'" );
		}
		return $newnum;
	}

	function getpmnumbyplid($uid , $plid) {

		return $this->db->result_first ( "SELECT pmnum FROM " . UC_DBTABLEPRE . "pm_members WHERE plid='$plid' AND uid='$uid'" );
	}

	function sendpm($fromuid , $fromusername , $touids , $subject , $message , $type = 0) {

		if (! $fromuid || ! $fromusername || ! $touids || ! $message) {
			return 0;
		}
		$touids = array_unique ( $touids );
		$relationship = $existplid = $pm_member_insertsql = array ();
		$this->base->load ( 'user' );
		$tmptouidarr = $touids;
		$blackls = $this->get_blackls ( $fromuid, $touids );
		
		foreach ( $tmptouidarr as $key => $value ) {
			if ($fromuid == $value || ! $value) {
				return PMSENDSELF_ERROR;
			}
			
			if (in_array ( '{ALL}', $blackls [$value] )) {
				unset ( $touids [$key] );
				continue;
			}
			$blackls [$value] = $_ENV ['user']->name2id ( $blackls [$value] );
			if (! (isset ( $blackls [$value] ) && ! in_array ( $fromuid, $blackls [$value] ))) {
				unset ( $touids [$key] );
			}
			else {
				$relationship [$value] = $this->relationship ( $fromuid, $value );
			}
		}
		if (empty ( $touids )) {
			return PMSENDNONE_ERROR;
		}
		if ($type == 1 && count ( $touids ) < 2) {
			return PMSENDCHATNUM_ERROR;
		}
		
		$_CACHE ['badwords'] = $this->base->cache ( 'badwords' );
		if ($_CACHE ['badwords'] ['findpattern']) {
			$subject = @preg_replace ( $_CACHE ['badwords'] ['findpattern'], $_CACHE ['badwords'] ['replace'], $subject );
			$message = @preg_replace ( $_CACHE ['badwords'] ['findpattern'], $_CACHE ['badwords'] ['replace'], $message );
		}
		if (! $subject) {
			$subject = $this->removecode ( trim ( $message ), 80 );
		}
		else {
			$subject = htmlspecialchars ( $subject );
		}
		$lastsummary = $this->removecode ( trim ( $message ), 150 );
		
		if (! $type) {
			$query = $this->db->query ( "SELECT plid, min_max FROM " . UC_DBTABLEPRE . "pm_lists WHERE min_max IN (" . $this->base->implode ( $relationship ) . ")" );
			while ( $thread = $this->db->fetch_array ( $query ) ) {
				$existplid [$thread ['min_max']] = $thread ['plid'];
			}
			$lastmessage = array ( 
				'lastauthorid' => $fromuid , 'lastauthor' => $fromusername , 'lastsummary' => $lastsummary 
			);
			$lastmessage = addslashes ( serialize ( $lastmessage ) );
			foreach ( $relationship as $key => $value ) {
				if (! isset ( $existplid [$value] )) {
					$this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . "pm_lists(authorid, pmtype, subject, members, min_max, dateline, lastmessage) VALUES('$fromuid', '1', '$subject', 2, '$value', '" . $this->base->time . "', '$lastmessage')" );
					$plid = $this->db->insert_id ();
					$this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . "pm_indexes(plid) VALUES('$plid')" );
					$pmid = $this->db->insert_id ();
					$this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . $this->getposttablename ( $plid ) . "(pmid, plid, authorid, message, dateline, delstatus) VALUES('$pmid', '$plid', '$fromuid', '$message', '" . $this->base->time . "', 0)" );
					$this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . "pm_members(plid, uid, isnew, pmnum, lastupdate, lastdateline) VALUES('$plid', '$key', '1', '1', '0', '" . $this->base->time . "')" );
					$this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . "pm_members(plid, uid, isnew, pmnum, lastupdate, lastdateline) VALUES('$plid', '$fromuid', '0', '1', '" . $this->base->time . "', '" . $this->base->time . "')" );
				}
				else {
					$plid = $existplid [$value];
					$this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . "pm_indexes(plid) VALUES('$plid')" );
					$pmid = $this->db->insert_id ();
					$this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . $this->getposttablename ( $plid ) . "(pmid, plid, authorid, message, dateline, delstatus) VALUES('$pmid', '$plid', '$fromuid', '$message', '" . $this->base->time . "', 0)" );
					$result = $this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . "pm_members(plid, uid, isnew, pmnum, lastupdate, lastdateline) VALUES('$plid', '$key', '1', '1', '0', '" . $this->base->time . "')", 'SILENT' );
					if (! $result) {
						$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_members SET isnew=1, pmnum=pmnum+1, lastdateline='" . $this->base->time . "' WHERE plid='$plid' AND uid='$key'" );
					}
					$result = $this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . "pm_members(plid, uid, isnew, pmnum, lastupdate, lastdateline) VALUES('$plid', '$fromuid', '0', '1', '" . $this->base->time . "', '" . $this->base->time . "')", 'SILENT' );
					if (! $result) {
						$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_members SET isnew=0, pmnum=pmnum+1, lastupdate='" . $this->base->time . "', lastdateline='" . $this->base->time . "' WHERE plid='$plid' AND uid='$fromuid'" );
					}
					$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_lists SET lastmessage='$lastmessage' WHERE plid='$plid'" );
				}
			}
		}
		else {
			$lastmessage = array ( 
				'firstauthorid' => $fromuid , 'firstauthor' => $fromusername , 'firstsummary' => $lastsummary 
			);
			$lastmessage = addslashes ( serialize ( $lastmessage ) );
			$this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . "pm_lists(authorid, pmtype, subject, members, min_max, dateline, lastmessage) VALUES('$fromuid', '2', '$subject', '" . (count ( $touids ) + 1) . "', '', '" . $this->base->time . "', '$lastmessage')" );
			$plid = $this->db->insert_id ();
			$this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . "pm_indexes(plid) VALUES('$plid')" );
			$pmid = $this->db->insert_id ();
			$this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . $this->getposttablename ( $plid ) . "(pmid, plid, authorid, message, dateline, delstatus) VALUES('$pmid', '$plid', '$fromuid', '$message', '" . $this->base->time . "', 0)" );
			$pm_member_insertsql [] = "('$plid', '$fromuid', '0', '1', '" . $this->base->time . "', '" . $this->base->time . "')";
			foreach ( $touids as $key => $value ) {
				$pm_member_insertsql [] = "('$plid', '$value', '1', '1', '0', '" . $this->base->time . "')";
			}
			$this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . "pm_members(plid, uid, isnew, pmnum, lastupdate, lastdateline) VALUES " . implode ( ',', $pm_member_insertsql ) );
		}
		
		$newpm = array ();
		foreach ( $touids as $key => $value ) {
			$newpm [] = "('$value')";
		}
		$this->db->query ( "REPLACE INTO " . UC_DBTABLEPRE . "newpm(uid) VALUES " . implode ( ',', $newpm ) );
		return $pmid;
	}

	function replypm($plid , $fromuid , $fromusername , $message) {

		if (! $plid || ! $fromuid || ! $fromusername || ! $message) {
			return 0;
		}
		
		$threadpm = $this->db->fetch_first ( "SELECT * FROM " . UC_DBTABLEPRE . "pm_lists WHERE plid='$plid'" );
		if (empty ( $threadpm )) {
			return PMTHREADNONE_ERROR;
		}
		
		if ($threadpm ['pmtype'] == 1) {
			$users = explode ( '_', $threadpm ['min_max'] );
			if ($users [0] == $fromuid) {
				$touid = $users [1];
			}
			elseif ($users [1] == $fromuid) {
				$touid = $users [0];
			}
			else {
				return PMPRIVILEGENONE_ERROR;
			}
			
			$blackls = $this->get_blackls ( $fromuid, $touid );
			if (in_array ( '{ALL}', $blackls [$touid] )) {
				return PMINBALCKLIST_ERROR;
			}
			$this->base->load ( 'user' );
			$blackls [$touid] = $_ENV ['user']->name2id ( $blackls [$touid] );
			if (! (isset ( $blackls [$touid] ) && ! in_array ( $fromuid, $blackls [$touid] ))) {
				return PMINBALCKLIST_ERROR;
			}
		}
		
		$memberuid = array ();
		$query = $this->db->query ( "SELECT * FROM " . UC_DBTABLEPRE . "pm_members WHERE plid='$plid'" );
		while ( $member = $this->db->fetch_array ( $query ) ) {
			$memberuid [$member ['uid']] = "('$member[uid]')";
		}
		if (! isset ( $memberuid [$fromuid] )) {
			return PMPRIVILEGENONE_ERROR;
		}
		
		$_CACHE ['badwords'] = $this->base->cache ( 'badwords' );
		if ($_CACHE ['badwords'] ['findpattern']) {
			$message = @preg_replace ( $_CACHE ['badwords'] ['findpattern'], $_CACHE ['badwords'] ['replace'], $message );
		}
		$lastsummary = $this->removecode ( trim ( $message ), 150 );
		
		$this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . "pm_indexes(plid) VALUES('$plid')" );
		$pmid = $this->db->insert_id ();
		$this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . $this->getposttablename ( $plid ) . "(pmid, plid, authorid, message, dateline, delstatus) VALUES('$pmid', '$plid', '$fromuid', '$message', '" . $this->base->time . "', 0)" );
		if ($threadpm ['pmtype'] == 1) {
			$lastmessage = array ( 
				'lastauthorid' => $fromuid , 'lastauthor' => $fromusername , 'lastsummary' => $lastsummary 
			);
			$lastmessage = addslashes ( serialize ( $lastmessage ) );
			$result = $this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . "pm_members(plid, uid, isnew, pmnum, lastupdate, lastdateline) VALUES('$plid', '$touid', '1', '1', '0', '" . $this->base->time . "')", 'SILENT' );
			if (! $result) {
				$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_members SET isnew=1, pmnum=pmnum+1, lastdateline='" . $this->base->time . "' WHERE plid='$plid' AND uid='$touid'" );
			}
			$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_members SET isnew=0, pmnum=pmnum+1, lastupdate='" . $this->base->time . "', lastdateline='" . $this->base->time . "' WHERE plid='$plid' AND uid='$fromuid'" );
		}
		else {
			$lastmessage = unserialize ( $threadpm ['lastmessage'] );
			$lastmessage = array ( 
				'firstauthorid' => $lastmessage ['firstauthorid'] , 'firstauthor' => $lastmessage ['firstauthor'] , 'firstsummary' => $lastmessage ['firstsummary'] , 'lastauthorid' => $fromuid , 'lastauthor' => $fromusername , 'lastsummary' => $lastsummary 
			);
			$lastmessage = addslashes ( serialize ( $lastmessage ) );
			$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_members SET isnew=1, pmnum=pmnum+1, lastdateline='" . $this->base->time . "' WHERE plid='$plid'" );
			$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_members SET isnew=0, lastupdate='" . $this->base->time . "' WHERE plid='$plid' AND uid='$fromuid'" );
		}
		$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_lists SET lastmessage='$lastmessage' WHERE plid='$plid'" );
		
		$this->db->query ( "REPLACE INTO " . UC_DBTABLEPRE . "newpm(uid) VALUES " . implode ( ',', $memberuid ) . "" );
		
		return $pmid;
	}

	function appendchatpm($plid , $uid , $touid) {

		if (! $plid || ! $uid || ! $touid) {
			return 0;
		}
		$threadpm = $this->db->fetch_first ( "SELECT * FROM " . UC_DBTABLEPRE . "pm_lists WHERE plid='$plid'" );
		if (empty ( $threadpm )) {
			return PMTHREADNONE_ERROR;
		}
		if ($threadpm ['pmtype'] != 2) {
			return PMCHATTYPE_ERROR;
		}
		if ($threadpm ['authorid'] != $uid) {
			return PMPRIVILEGENONE_ERROR;
		}
		
		$blackls = $this->get_blackls ( $uid, $touid );
		if (in_array ( '{ALL}', $blackls [$touid] )) {
			return PMINBALCKLIST_ERROR;
		}
		$this->base->load ( 'user' );
		$blackls [$touid] = $_ENV ['user']->name2id ( $blackls [$touid] );
		if (! (isset ( $blackls [$touid] ) && ! in_array ( $uid, $blackls [$touid] ))) {
			return PMINBALCKLIST_ERROR;
		}
		
		$pmnum = $this->db->result_first ( "SELECT COUNT(*) FROM " . UC_DBTABLEPRE . $this->getposttablename ( $plid ) . " WHERE plid='$plid'" );
		$this->db->query ( "INSERT INTO " . UC_DBTABLEPRE . "pm_members(plid, uid, isnew, pmnum, lastupdate, lastdateline) VALUES('$plid', '$touid', '1', '$pmnum', '0', '0')", 'SILENT' );
		$num = $this->db->result_first ( "SELECT COUNT(*) FROM " . UC_DBTABLEPRE . "pm_members WHERE plid='$plid'" );
		$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_lists SET members='$num' WHERE plid='$plid'" );
		
		return 1;
	}

	function kickchatpm($plid , $uid , $touid) {

		if (! $uid || ! $touid || ! $plid || $uid == $touid) {
			return 0;
		}
		$threadpm = $this->db->fetch_first ( "SELECT * FROM " . UC_DBTABLEPRE . "pm_lists WHERE plid='$plid'" );
		if ($threadpm ['pmtype'] != 2) {
			return PMCHATTYPE_ERROR;
		}
		if ($threadpm ['authorid'] != $uid) {
			return PMPRIVILEGENONE_ERROR;
		}
		$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . "pm_members WHERE plid='$plid' AND uid='$touid'" );
		$num = $this->db->result_first ( "SELECT COUNT(*) FROM " . UC_DBTABLEPRE . "pm_members WHERE plid='$plid'" );
		$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_lists SET members='$num' WHERE plid='$plid'" );
		return 1;
	}

	function quitchatpm($uid , $plids) {

		if (! $uid || ! $plids) {
			return 0;
		}
		$list = array ();
		$query = $this->db->query ( "SELECT * FROM " . UC_DBTABLEPRE . "pm_members m LEFT JOIN " . UC_DBTABLEPRE . "pm_lists t ON m.plid=t.plid WHERE m.plid IN (" . $this->base->implode ( $plids ) . ") AND m.uid='$uid'" );
		while ( $threadpm = $this->db->fetch_array ( $query ) ) {
			if ($threadpm ['pmtype'] != 2) {
				return PMCHATTYPE_ERROR;
			}
			if ($threadpm ['authorid'] == $uid) {
				return PMPRIVILEGENONE_ERROR;
			}
			$list [] = $threadpm ['plid'];
		}
		
		if ($list) {
			$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . "pm_members WHERE plid IN (" . $this->base->implode ( $list ) . ") AND uid='$uid'" );
			$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_lists SET members=members-1 WHERE plid IN (" . $this->base->implode ( $list ) . ")" );
		}
		
		return 1;
	}

	function deletepmbypmid($uid , $pmid) {

		if (! $uid || ! $pmid) {
			return 0;
		}
		$index = $this->db->fetch_first ( "SELECT * FROM " . UC_DBTABLEPRE . "pm_indexes i LEFT JOIN " . UC_DBTABLEPRE . "pm_lists t ON i.plid=t.plid WHERE i.pmid='$pmid'" );
		if ($index ['pmtype'] != 1) {
			return PMUIDTYPE_ERROR;
		}
		$users = explode ( '_', $index ['min_max'] );
		if (! in_array ( $uid, $users )) {
			return PMPRIVILEGENONE_ERROR;
		}
		if ($index ['authorid'] != $uid) {
			$this->db->query ( "UPDATE " . UC_DBTABLEPRE . $this->getposttablename ( $index ['plid'] ) . " SET delstatus=2 WHERE pmid='$pmid' AND delstatus=0" );
			$updatenum = $this->db->affected_rows ();
			$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . $this->getposttablename ( $index ['plid'] ) . " WHERE pmid='$pmid' AND delstatus=1" );
			$deletenum = $this->db->affected_rows ();
		}
		else {
			$this->db->query ( "UPDATE " . UC_DBTABLEPRE . $this->getposttablename ( $index ['plid'] ) . " SET delstatus=1 WHERE pmid='$pmid' AND delstatus=0" );
			$updatenum = $this->db->affected_rows ();
			$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . $this->getposttablename ( $index ['plid'] ) . " WHERE pmid='$pmid' AND delstatus=2" );
			$deletenum = $this->db->affected_rows ();
		}
		
		if (! $this->db->result_first ( "SELECT COUNT(*) FROM " . UC_DBTABLEPRE . $this->getposttablename ( $index ['plid'] ) . " WHERE plid='$index[plid]'" )) {
			$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . "pm_lists WHERE plid='$index[plid]'" );
			$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . "pm_members WHERE plid='$index[plid]'" );
			$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . "pm_indexes WHERE plid='$index[plid]'" );
		}
		else {
			$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_members SET pmnum=pmnum-" . ($updatenum + $deletenum) . " WHERE plid='" . $index ['plid'] . "' AND uid='$uid'" );
		}
		return 1;
	}

	function deletepmbypmids($uid , $pmids) {

		if ($pmids) {
			foreach ( $pmids as $key => $pmid ) {
				$this->deletepmbypmid ( $uid, $pmid );
			}
		}
		return 1;
	}

	/*
	function deletepmbypmids($uid, $pmids) {
		if(!$uid || !$pmids) {
			return 0;
		}
		$pmplid = $delstatus1pm = $delstatus2pm = $pmplidpost = array();
		$existplid = array();
		$query = $this->db->query("SELECT * FROM ".UC_DBTABLEPRE."pm_indexes i LEFT JOIN ".UC_DBTABLEPRE."pm_lists t ON i.plid=t.plid WHERE i.pmid IN (".$this->base->implode($pmids).") AND t.pmtype=1");
		while($index = $this->db->fetch_array($query)) {
			$users = explode('_', $index['min_max']);
			if(!in_array($uid, $users)) {
				return PMPRIVILEGENONE_ERROR;
			}
			if($index['authorid'] == $uid) {
				$delstatus1pm[$this->getposttablename($index['plid'])][] = $index['pmid'];
			} else {
				$delstatus2pm[$this->getposttablename($index['plid'])][] = $index['pmid'];
			}
			$pmplidpost[$this->getposttablename($index['plid'])][] = $index['plid'];
			$pmplid[$index['plid']] = $index['plid'];
		}
		if(empty($pmplidpost)) {
			return 0;
		}

		if($delstatus1pm) {
			foreach($delstatus1pm as $key => $value) {
				$this->db->query("UPDATE ".UC_DBTABLEPRE."$key SET delstatus=1 WHERE pmid IN (".$this->base->implode($value).") AND delstatus=0");
				$this->db->query("DELETE FROM ".UC_DBTABLEPRE."$key WHERE pmid IN (".$this->base->implode($value).") AND delstatus=2");
			}
		}

		if($delstatus2pm) {
			foreach($delstatus2pm as $key => $value) {
				$this->db->query("UPDATE ".UC_DBTABLEPRE."$key SET delstatus=2 WHERE pmid IN (".$this->base->implode($value).") AND delstatus=0");
				$this->db->query("DELETE FROM ".UC_DBTABLEPRE."$key WHERE pmid IN (".$this->base->implode($value).") AND delstatus=1");
			}
		}

		foreach($pmplidpost as $key => $value) {
			$query = $this->db->query("SELECT DISTINCT plid FROM ".UC_DBTABLEPRE."$key WHERE plid IN (".$this->base->implode($value).")");
			while($pmpostarr = $this->db->fetch_array($query)) {
				$existplid[] = $pmpostarr['plid'];
			}
		}
		$pmplid = array_diff($pmplid, $existplid);
		if($pmplid) {
			$this->db->query("DELETE FROM ".UC_DBTABLEPRE."pm_lists WHERE plid IN (".$this->base->implode($pmplid).")");
			$this->db->query("DELETE FROM ".UC_DBTABLEPRE."pm_members WHERE plid IN (".$this->base->implode($pmplid).")");
			$this->db->query("DELETE FROM ".UC_DBTABLEPRE."pm_indexes WHERE plid IN (".$this->base->implode($pmplid).")");
		}
		return 1;
	}
*/
	
	function deletepmbyplid($uid , $plid , $isuser = 0) {

		if (! $uid || ! $plid) {
			return 0;
		}
		
		if ($isuser) {
			$relationship = $this->relationship ( $uid, $plid );
			$sql = "SELECT * FROM " . UC_DBTABLEPRE . "pm_lists WHERE min_max='$relationship'";
		}
		else {
			$sql = "SELECT * FROM " . UC_DBTABLEPRE . "pm_lists WHERE plid='$plid'";
		}
		
		$query = $this->db->query ( $sql );
		if ($list = $this->db->fetch_array ( $query )) {
			if ($list ['pmtype'] == 1) {
				$user = explode ( '_', $list ['min_max'] );
				if (! in_array ( $uid, $user )) {
					return PMPRIVILEGENONE_ERROR;
				}
			}
			else {
				if ($uid != $list ['authorid']) {
					return PMPRIVILEGENONE_ERROR;
				}
			}
		}
		else {
			return PMTHREADNONE_ERROR;
		}
		
		if ($list ['pmtype'] == 1) {
			if ($uid == $list ['authorid']) {
				$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . $this->getposttablename ( $list ['plid'] ) . " WHERE plid='$list[plid]' AND delstatus=2" );
				$this->db->query ( "UPDATE " . UC_DBTABLEPRE . $this->getposttablename ( $list ['plid'] ) . " SET delstatus=1 WHERE plid='$list[plid]' AND delstatus=0" );
			}
			else {
				$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . $this->getposttablename ( $list ['plid'] ) . " WHERE plid='$list[plid]' AND delstatus=1" );
				$this->db->query ( "UPDATE " . UC_DBTABLEPRE . $this->getposttablename ( $list ['plid'] ) . " SET delstatus=2 WHERE plid='$list[plid]' AND delstatus=0" );
			}
			$count = $this->db->result_first ( "SELECT COUNT(*) FROM " . UC_DBTABLEPRE . $this->getposttablename ( $list ['plid'] ) . " WHERE plid='$list[plid]'" );
			if (! $count) {
				$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . "pm_lists WHERE plid='$list[plid]'" );
				$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . "pm_members WHERE plid='$list[plid]'" );
				$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . "pm_indexes WHERE plid='$list[plid]'" );
			}
			else {
				$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . "pm_members WHERE plid='$list[plid]' AND uid='$uid'" );
			}
		}
		else {
			$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . $this->getposttablename ( $list ['plid'] ) . " WHERE plid='$list[plid]'" );
			$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . "pm_lists WHERE plid='$list[plid]'" );
			$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . "pm_members WHERE plid='$list[plid]'" );
			$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . "pm_indexes WHERE plid='$list[plid]'" );
		}
		return 1;
	}

	function deletepmbyplids($uid , $plids , $isuser = 0) {

		if ($plids) {
			foreach ( $plids as $key => $plid ) {
				$this->deletepmbyplid ( $uid, $plid, $isuser );
			}
		}
		return 1;
	}

	/*
	function deletepmbyplid($uid, $plids, $isuser = 0) {
		if(!$uid || !$plids) {
			return 0;
		}

		$privatepm = $chatpm = array();
		$privatepmauthorpost = $privatepmpost = $privatepmpostall = array();
		$existplid = array();
		if($isuser) {
			$relationship = array();
			foreach($plids as $key => $value) {
				if($uid == $value || !$value) {
					return PMDATA_ERROR;
				}
				$relationship[] = $this->relationship($uid, $value);
			}
			$sql = "SELECT * FROM ".UC_DBTABLEPRE."pm_lists WHERE min_max IN (".$this->base->implode($relationship).")";
		} else {
			$sql = "SELECT * FROM ".UC_DBTABLEPRE."pm_lists WHERE plid IN (".$this->base->implode($plids).")";
		}
		$query = $this->db->query($sql);
		while($threadpm = $this->db->fetch_array($query)) {
			if($threadpm['pmtype'] == 1) {
				$users = explode('_', $threadpm['min_max']);
				if($users[0] == $uid) {
					$touid = $users[1];
				} elseif($users[1] == $uid) {
					$touid = $users[0];
				} else {
					continue;
				}

				if($threadpm['authorid'] == $uid) {
					$privatepmauthorpost[$this->getposttablename($threadpm['plid'])][] = $threadpm['plid'];
				} else {
					$privatepmpost[$this->getposttablename($threadpm['plid'])][] = $threadpm['plid'];
				}
				$privatepmpostall[$this->getposttablename($threadpm['plid'])][] = $threadpm['plid'];
				$privatepm[] = $threadpm['plid'];
			} else {
				if($uid != $threadpm['authorid']) {
					continue;
				}
				$chatpm[] = $threadpm['plid'];
				$chatpmpost[$this->getposttablename($threadpm['plid'])][] = $threadpm['plid'];
			}
		}

		if($privatepmauthorpost) {
			foreach($privatepmauthorpost as $key => $value) {
				$this->db->query("UPDATE ".UC_DBTABLEPRE."$key SET delstatus=1 WHERE plid IN (".$this->base->implode($value).") AND delstatus=0");
				$this->db->query("DELETE FROM ".UC_DBTABLEPRE."$key WHERE plid IN (".$this->base->implode($value).") AND delstatus=2");
			}
		}

		if($privatepmpost) {
			foreach($privatepmpost as $key => $value) {
				$this->db->query("UPDATE ".UC_DBTABLEPRE."$key SET delstatus=2 WHERE plid IN (".$this->base->implode($value).") AND delstatus=0");
				$this->db->query("DELETE FROM ".UC_DBTABLEPRE."$key WHERE plid IN (".$this->base->implode($value).") AND delstatus=1");
			}
		}
		if($privatepmpostall) {
			foreach($privatepmpostall as $key => $value) {
				$query = $this->db->query("SELECT DISTINCT plid FROM ".UC_DBTABLEPRE."$key WHERE plid IN (".$this->base->implode($value).")");
				while($postpm = $this->db->fetch_array($query)) {
					$existplid[] = $postpm['plid'];
				}
			}
			$this->db->query("DELETE FROM ".UC_DBTABLEPRE."pm_members WHERE plid IN (".$this->base->implode($privatepm).") AND uid='$uid'");
			$privatepm = array_diff($privatepm, $existplid);
			if(!empty($privatepm)) {
				$this->db->query("DELETE FROM ".UC_DBTABLEPRE."pm_lists WHERE plid IN (".$this->base->implode($privatepm).")");
				$this->db->query("DELETE FROM ".UC_DBTABLEPRE."pm_members WHERE plid IN (".$this->base->implode($privatepm).")");
				$this->db->query("DELETE FROM ".UC_DBTABLEPRE."pm_indexes WHERE plid IN (".$this->base->implode($privatepm).")");
			}
		}
		if($chatpmpost) {
			foreach($chatpmpost as $key => $value) {
				$this->db->query("DELETE FROM ".UC_DBTABLEPRE."$key WHERE plid IN (".$this->base->implode($value).")");
			}
			$this->db->query("DELETE FROM ".UC_DBTABLEPRE."pm_lists WHERE plid IN (".$this->base->implode($chatpm).")");
			$this->db->query("DELETE FROM ".UC_DBTABLEPRE."pm_members WHERE plid IN (".$this->base->implode($chatpm).")");
			$this->db->query("DELETE FROM ".UC_DBTABLEPRE."pm_indexes WHERE plid IN (".$this->base->implode($chatpm).")");
		}
		return 1;
	}
*/
	
	function getprivatepmbyplid($uid , $plid , $starttime = 0 , $endtime = 0 , $start = 0 , $ppp = 0) {

		if (! $uid || ! $plid) {
			return 0;
		}
		if (! $this->isprivilege ( $plid, $uid )) {
			return 0;
		}
		$thread = $this->db->fetch_first ( "SELECT * FROM " . UC_DBTABLEPRE . "pm_lists WHERE plid='$plid'" );
		if ($thread ['pmtype'] != 1) {
			return 0;
		}
		$pms = $addsql = array ();
		$addsql [] = "p.plid='$plid'";
		if ($thread ['authorid'] == $uid) {
			$addsql [] = 'p.delstatus IN (0,2)';
		}
		else {
			$addsql [] = 'p.delstatus IN (0,1)';
		}
		if ($starttime) {
			$addsql [] = "p.dateline>'$starttime'";
		}
		if ($endtime) {
			$addsql [] = "p.dateline<'$endtime'";
		}
		if ($addsql) {
			$addsql = implode ( ' AND ', $addsql );
		}
		else {
			$addsql = '';
		}
		if ($ppp) {
			$limitsql = 'LIMIT ' . intval ( $start ) . ', ' . intval ( $ppp );
		}
		else {
			$limitsql = '';
		}
		$pms = $this->db->fetch_all ( "SELECT t.*, p.*, t.authorid as founderuid, t.dateline as founddateline FROM " . UC_DBTABLEPRE . $this->getposttablename ( $plid ) . " p LEFT JOIN " . UC_DBTABLEPRE . "pm_lists t ON p.plid=t.plid WHERE $addsql ORDER BY p.dateline DESC $limitsql" );
		$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_members SET isnew=0 WHERE plid='$plid' AND uid='$uid' AND isnew=1" );
		return array_reverse ( $pms );
	}

	function getchatpmbyplid($uid , $plid , $starttime = 0 , $endtime = 0 , $start = 0 , $ppp = 0) {

		if (! $uid || ! $plid) {
			return 0;
		}
		if (! $this->isprivilege ( $plid, $uid )) {
			return 0;
		}
		$pms = $addsql = array ();
		$addsql [] = "p.plid='$plid'";
		if ($starttime) {
			$addsql [] = "p.dateline>'$starttime'";
		}
		if ($endtime) {
			$addsql [] = "p.dateline<'$endtime'";
		}
		if ($addsql) {
			$addsql = implode ( ' AND ', $addsql );
		}
		else {
			$addsql = '';
		}
		if ($ppp) {
			$limitsql = 'LIMIT ' . intval ( $start ) . ', ' . intval ( $ppp );
		}
		else {
			$limitsql = '';
		}
		$query = $this->db->query ( "SELECT t.*, p.*, t.authorid as founderuid, t.dateline as founddateline FROM " . UC_DBTABLEPRE . $this->getposttablename ( $plid ) . " p LEFT JOIN " . UC_DBTABLEPRE . "pm_lists t ON p.plid=t.plid WHERE $addsql ORDER BY p.dateline DESC $limitsql" );
		while ( $pm = $this->db->fetch_array ( $query ) ) {
			if ($pm ['pmtype'] != 2) {
				return 0;
			}
			$pms [] = $pm;
		}
		$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "pm_members SET isnew=0 WHERE plid='$plid' AND uid='$uid' AND isnew=1" );
		return array_reverse ( $pms );
	}

	function getpmlist($uid , $filter , $start , $ppp = 10) {

		if (! $uid) {
			return 0;
		}
		$members = $touidarr = $tousernamearr = array ();
		
		if ($filter == 'newpm') {
			$addsql = 'm.isnew=1 AND ';
			/*������Ӱ��
		} elseif($filter == 'privatepm') {
			$addsql = 't.pmtype=1 AND ';
		} elseif($filter == 'chatpm') {
			$addsql = 't.pmtype=2 AND ';
		*/
		}
		else {
			$addsql = '';
		}
		$query = $this->db->query ( "SELECT * FROM " . UC_DBTABLEPRE . "pm_members m LEFT JOIN " . UC_DBTABLEPRE . "pm_lists t ON t.plid=m.plid WHERE $addsql m.uid='$uid' ORDER BY m.lastdateline DESC LIMIT $start, $ppp" );
		while ( $member = $this->db->fetch_array ( $query ) ) {
			if ($member ['pmtype'] == 1) {
				$users = explode ( '_', $member ['min_max'] );
				$member ['touid'] = $users [0] == $uid ? $users [1] : $users [0];
			}
			else {
				$member ['touid'] = 0;
			}
			$touidarr [$member ['touid']] = $member ['touid'];
			$members [] = $member;
		}
		
		$this->db->query ( "DELETE FROM " . UC_DBTABLEPRE . "newpm WHERE uid='$uid'" );
		
		$array = array ();
		if ($members) {
			$today = $this->base->time - $this->base->time % 86400;
			$this->base->load ( 'user' );
			$tousernamearr = $_ENV ['user']->id2name ( $touidarr );
			foreach ( $members as $key => $data ) {
				
				$daterange = 5;
				$data ['founddateline'] = $data ['dateline'];
				$data ['dateline'] = $data ['lastdateline'];
				$data ['pmid'] = $data ['plid'];
				$lastmessage = unserialize ( $data ['lastmessage'] );
				if ($lastmessage ['firstauthorid']) {
					$data ['firstauthorid'] = $lastmessage ['firstauthorid'];
					$data ['firstauthor'] = $lastmessage ['firstauthor'];
					$data ['firstsummary'] = $lastmessage ['firstsummary'];
				}
				if ($lastmessage ['lastauthorid']) {
					$data ['lastauthorid'] = $lastmessage ['lastauthorid'];
					$data ['lastauthor'] = $lastmessage ['lastauthor'];
					$data ['lastsummary'] = $lastmessage ['lastsummary'];
				}
				$data ['msgfromid'] = $lastmessage ['lastauthorid'];
				$data ['msgfrom'] = $lastmessage ['lastauthor'];
				$data ['message'] = $lastmessage ['lastsummary'];
				
				$data ['new'] = $data ['isnew'];
				
				$data ['msgtoid'] = $data ['touid'];
				if ($data ['lastdateline'] >= $today) {
					$daterange = 1;
				}
				elseif ($data ['lastdateline'] >= $today - 86400) {
					$daterange = 2;
				}
				elseif ($data ['lastdateline'] >= $today - 172800) {
					$daterange = 3;
				}
				elseif ($data ['lastdateline'] >= $today - 604800) {
					$daterange = 4;
				}
				$data ['daterange'] = $daterange;
				
				$data ['tousername'] = $tousernamearr [$data ['touid']];
				unset ( $data ['min_max'] );
				$array [] = $data;
			}
		}
		return $array;
	}

	function getplidbypmid($pmid) {

		if (! $pmid) {
			return false;
		}
		return $this->db->result_first ( "SELECT plid FROM " . UC_DBTABLEPRE . "pm_indexes WHERE pmid='$pmid'" );
	}

	function getplidbytouid($uid , $touid) {

		if (! $uid || ! $touid) {
			return 0;
		}
		return $this->db->result_first ( "SELECT plid FROM " . UC_DBTABLEPRE . "pm_lists WHERE min_max='" . $this->relationship ( $uid, $touid ) . "'" );
	}

	function getuidbyplid($plid) {

		if (! $plid) {
			return array ();
		}
		$uidarr = array ();
		$query = $this->db->query ( "SELECT uid FROM " . UC_DBTABLEPRE . "pm_members WHERE plid='$plid'" );
		while ( $uid = $this->db->fetch_array ( $query ) ) {
			$uidarr [$uid ['uid']] = $uid ['uid'];
		}
		return $uidarr;
	}

	function chatpmmemberlist($uid , $plid) {

		if (! $uid || ! $plid) {
			return 0;
		}
		$uidarr = $this->getuidbyplid ( $plid );
		if (empty ( $uidarr )) {
			return 0;
		}
		if (! isset ( $uidarr [$uid] )) {
			return 0;
		}
		$authorid = $this->db->result_first ( "SELECT authorid FROM " . UC_DBTABLEPRE . "pm_lists WHERE plid='$plid'" );
		return array ( 
			'author' => $authorid , 'member' => $uidarr 
		);
	}

	function relationship($fromuid , $touid) {

		if ($fromuid < $touid) {
			return $fromuid . '_' . $touid;
		}
		elseif ($fromuid > $touid) {
			return $touid . '_' . $fromuid;
		}
		else {
			return '';
		}
	}

	function getposttablename($plid) {

		$id = substr ( ( string ) $plid, - 1, 1 );
		return 'pm_messages_' . $id;
	}

	function get_blackls($uid , $uids = array()) {

		if (! $uids) {
			$blackls = $this->db->result_first ( "SELECT blacklist FROM " . UC_DBTABLEPRE . "memberfields WHERE uid='$uid'" );
		}
		else {
			$uids = $this->base->implode ( $uids );
			$blackls = array ();
			$query = $this->db->query ( "SELECT uid, blacklist FROM " . UC_DBTABLEPRE . "memberfields WHERE uid IN ($uids)" );
			while ( $data = $this->db->fetch_array ( $query ) ) {
				$blackls [$data ['uid']] = explode ( ',', $data ['blacklist'] );
			}
		}
		return $blackls;
	}

	function set_blackls($uid , $blackls) {

		$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "memberfields SET blacklist='$blackls' WHERE uid='$uid'" );
		return $this->db->affected_rows ();
	}

	function update_blackls($uid , $username , $action = 1) {

		$username = ! is_array ( $username ) ? array ( 
			$username 
		) : $username;
		if ($action == 1) {
			if (! in_array ( '{ALL}', $username )) {
				$usernames = $this->base->implode ( $username );
				$query = $this->db->query ( "SELECT username FROM " . UC_DBTABLEPRE . "members WHERE username IN ($usernames)" );
				$usernames = array ();
				while ( $data = $this->db->fetch_array ( $query ) ) {
					$usernames [addslashes ( $data ['username'] )] = addslashes ( $data ['username'] );
				}
				if (! $usernames) {
					return 0;
				}
				$blackls = addslashes ( $this->db->result_first ( "SELECT blacklist FROM " . UC_DBTABLEPRE . "memberfields WHERE uid='$uid'" ) );
				if ($blackls) {
					$list = explode ( ',', $blackls );
					foreach ( $list as $k => $v ) {
						if (in_array ( $v, $usernames )) {
							unset ( $usernames [$v] );
						}
					}
				}
				if (! $usernames) {
					return 1;
				}
				$listnew = implode ( ',', $usernames );
				$blackls .= $blackls !== '' ? ',' . $listnew : $listnew;
			}
			else {
				$blackls = addslashes ( $this->db->result_first ( "SELECT blacklist FROM " . UC_DBTABLEPRE . "memberfields WHERE uid='$uid'" ) );
				$blackls .= ',{ALL}';
			}
		}
		else {
			$blackls = addslashes ( $this->db->result_first ( "SELECT blacklist FROM " . UC_DBTABLEPRE . "memberfields WHERE uid='$uid'" ) );
			$list = $blackls = explode ( ',', $blackls );
			foreach ( $list as $k => $v ) {
				if (in_array ( $v, $username )) {
					unset ( $blackls [$k] );
				}
			}
			$blackls = implode ( ',', $blackls );
		}
		$this->db->query ( "UPDATE " . UC_DBTABLEPRE . "memberfields SET blacklist='$blackls' WHERE uid='$uid'" );
		return 1;
	}

	function removecode($str , $length) {

		static $uccode = null;
		if ($uccode === null) {
			require_once UC_ROOT . 'lib/uccode.class.php';
			$uccode = new uccode ();
		}
		$str = $uccode->complie ( $str );
		return trim ( $this->base->cutstr ( strip_tags ( $str ), $length ) );
	}

	function ispminterval($uid , $interval = 0) {

		if (! $uid) {
			return 0;
		}
		$interval = intval ( $interval );
		if (! $interval) {
			return 1;
		}
		$lastupdate = $this->db->result_first ( "SELECT lastupdate FROM " . UC_DBTABLEPRE . "pm_members WHERE uid='$uid' ORDER BY lastupdate DESC LIMIT 1" );
		if (($this->base->time - $lastupdate) > $interval) {
			return 1;
		}
		else {
			return 0;
		}
	}

	function isprivatepmthreadlimit($uid , $maxnum = 0) {

		if (! $uid) {
			return 0;
		}
		$maxnum = intval ( $maxnum );
		if (! $maxnum) {
			return 1;
		}
		$num = $this->db->result_first ( "SELECT COUNT(*) FROM " . UC_DBTABLEPRE . "pm_members m LEFT JOIN " . UC_DBTABLEPRE . "pm_lists t ON m.plid=t.plid WHERE uid='$uid' AND lastupdate>'" . ($this->base->time - 86400) . "' AND t.pmtype=1" );
		if ($maxnum - $num < 0) {
			return 0;
		}
		else {
			return 1;
		}
	}

	function ischatpmthreadlimit($uid , $maxnum = 0) {

		if (! $uid) {
			return 0;
		}
		$maxnum = intval ( $maxnum );
		if (! $maxnum) {
			return 1;
		}
		$num = $this->db->result_first ( "SELECT COUNT(*) FROM " . UC_DBTABLEPRE . "pm_lists WHERE authorid='$uid' AND dateline>'" . ($this->base->time - 86400) . "'" );
		if ($maxnum - $num < 0) {
			return 0;
		}
		else {
			return 1;
		}
	}
}
?>
